London Taxis Int Tx4 (2015)

1,176 real MOT outcomes analysed • 77.4% first-time pass rate

2015 London Taxis Int Tx4

CarHunch analysed 1,176 real MOT records for the 2015 London Taxis Int Tx4. Real test outcomes — pass rates, defect profiles, mileage data — from verified DVLA records. Updated as new MOTs are recorded.
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AI Analysis Reliability Overview Common Issues Check a Specific Reg Buyer's Checklist Pass Rate by Fuel Mileage Distribution Still on the Road MOT Averages Colour Breakdown Compare Models

The 2015 London Taxis INT TX4 falls slightly below the UK average with a 77.3% first-time pass rate, but the real concern is that 54.8% of these vehicles have recorded a dangerous defect at some point—nearly three times the typical rate. This is a workhorse taxi cab, and that high dangerous defect rate reflects the punishing use these vehicles endure; buyers need to be cautious.

At 123,419 miles median, these TX4s have accumulated serious mileage for their age, yet they're averaging 5.34 failures and 17.4 advisories per test, suggesting structural wear is catching up fast. If you're considering one, get a full pre-purchase inspection focusing on brakes, suspension, and emissions systems, and factor in regular heavy maintenance into your budget.

The 2015 London Taxis Int Tx4 has a decent first-time pass rate (77.4%), but a higher-than-average share of vehicles have had serious defects recorded — the individual vehicle's history matters a lot here.

⚠️ Over 1 in 5 of these vehicles have had a dangerous MOT failure at some point — usually tyres or brakes, and often a one-off issue rather than a persistent problem. The group stats won't tell you which one you're looking at.
First-time pass
77.4%
UK average ~80%
Around average
Dangerous (ever)
54.8%
At least once in MOT history
Check this vehicle
Avg failures / car
5.34
Over 22.2 tests on record
High
Typical mileage
123k
Middle half: 100k–145k
For context
🔧 Average reliability. Passes at roughly the UK rate — not a standout, not a problem vehicle. Individual history makes all the difference.
🔧 Expect consumable spend. An average of 17.4 advisories per vehicle tells you wear items (tyres, brakes) get flagged regularly. Budget for them — they're not surprises.
🔍 The dangerous defect figure is real. Most are one-off tyre failures or brake issues — not structural problems. But it's exactly why checking the individual vehicle's history is essential, not optional.

These stats describe 1,176 vehicles as a group. The specific vehicle you're looking at could be the one good example or the one outlier. Run its registration to find out.

Watch for defects — worth knowing

What tends to go wrong

Across 1,176 vehicles — figures show how many had each issue flagged at least once in their MOT history.

Other issues 109.1%
Oil leak, but not excessive · Engine MIL inoperative or indicates a malfunction
Tyre wear 43.1%
Offside Rear Tyre worn close to legal limit/worn on edge · Nearside Rear Tyre worn close to legal limit/worn on edge · Offside Front Tyre worn close to legal limit/worn on edge · …
Budget for a full set — on a vehicle this age, tyres are expected consumables. An inspection will confirm how much is left.
Suspension & steering 40.2%
Offside Front Upper Suspension arm pin or bush excessively worn · Nearside Front Upper Suspension arm pin or bush excessively worn · Offside Front Wheel bearing has slight play · …
Harder to spot without a ramp — this is a good reason to book a pre-purchase inspection.
Brake wear 36.8%
Parking brake efficiency below requirements · Front Brake pad(s) wearing thin · Front Brake disc worn, pitted or scored, but not seriously weakened
Ask the seller when brakes were last serviced. If they don't know, factor in the cost.
Lighting 21.6%
Nearside Front Position lamp not working
Usually cheap to fix. Worth confirming all lights work before collecting.

Data covers a 3-year window centred on 2015.

See this vehicle's full MOT history & AI hunches

Spot recurring advisories, hidden issues, and how it compares to 1,176 London Taxis Int Tx4 cars.

UK

Before you buy a 2015 London Taxis Int Tx4

Based on MOT data from 1,176 vehicles — here's what to check.

  • 📋 Check the full MOT history. 54.8% of these vehicles have had a dangerous defect recorded - recurring advisories often signal problems years before they become failures.
    Search the reg on CarHunch for the full MOT history, reliability stats and a free AI-powered analysis of that exact vehicle.
  • 🔍 Brake pipes, sills and subframes are the key areas on a vehicle this age — structural rust is hard to spot without getting underneath. A mechanic will check all of this before you commit, and give you a concrete basis to negotiate on price. Inspection ClickMechanic
  • 📄 Outstanding finance, insurance write-offs and clocking won't appear in the MOT records — a dedicated history check covers all of this. Our link gets you 20% off automatically. History carVertical Get 20% off via CarHunch

Pass Rate by Fuel Type

Fuel type Vehicles Pass rate Avg failures
Diesel (99%) 1,165 77.5% 5.35

Colour Breakdown

Based on 13,749 London Taxis Int Tx4 vehicles registered in the UK — across all years. From DVLA registration records.

Black 70.4%
9,682
Grey 7.9%
1,092
Silver 6.5%
896
Blue 4.9%
674
White 2.8%
386
Multi-colour 2.4%
328
Red 2.1%
282
Green 1.1%
158
Purple 0.6%
84
Pink 0.5%
69
Yellow 0.4%
58
Orange 0.3%
40

Mileage Distribution

Most 2015 London Taxis Int Tx4 vehicles sit in the blue band. If the vehicle you're looking at is outside it, it's either unusually low or high mileage for its age.

123,419
typical
99,643
low mileage
145,228
high mileage

Half of all 2015 London Taxis Int Tx4 vehicles fall between 99,643 and 145,228 miles.

Is the mileage you're seeing normal?
Under 99,643 miles — lower than most. Could be great, or could be a vehicle that rarely moved. Check test frequency and mileage progression in the MOT history.
99,643–145,228 miles — normal for age. This is where most 2015 London Taxis Int Tx4s sit.
Over 196,057 miles — higher than typical. Not necessarily a problem, but check service history and look out for advisory build-up on tyres and brakes.

2015 London Taxis Int Tx4 — Still on the Road

Almost all 2015 London Taxis Int Tx4s are still on the road.

Strong survival — 1,107 vehicles still getting MOTs in 2025, 97% of the peak.

974 1,107 2016 2025

Based on vehicles from this manufacture year that had at least one MOT test in each calendar year. Data from 2016–2025.
* The 2020 dip reflects the government's COVID-19 MOT exemption, which allowed certificates to be extended by six months — fewer tests were conducted that year.

MOT History Averages

22.2
Avg MOT tests per vehicle
5.34
Avg failures per vehicle
17.4
Avg advisories per vehicle
Other model years — London Taxis Int Tx4: All Tx4 years → Which year to buy? →
2006 2007 2008 2009 2010 2011 2012 2013 2014 2016 2017

Or browse all models: London Taxis Int →

Compare with another model

See how the 2015 London Taxis Int Tx4 stacks up against a rival.

Watch for defects — worth knowing